This document applies to firmware version 3.20
and above.
Warnin g
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
HIn North America, call 1-800-833-9200.
HWorldwide, visit www.tektronix.com to find contacts in your area.
Warranty 2
Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year
from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either
will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the
defective product. Parts, modules and replacement products used by Tektronix for warranty work may be new or
reconditioned to like new performance. All replaced parts, modules and products become the property of Tektronix.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the
warranty period and make suita ble arrangements for the performance of servic e. Customer shal l be responsible for
packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepai d.
Tektronix shall pay for the return of the product to Customer if t he shipment i s to a location within the country in which the
Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any
other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting
from attempts by personnel othe r than Tektronix representati ves to install, repair or service the product; b) to repair
damage resulting from improper use or c onnection to incompatible equipment; c) to repair any damage or malfunction
caused by the use of non-Tektronix supplies; or d) to service a product that has been modified or integrated with other
products when the effect of such modification or integration increases the time or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER
WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’
RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY
PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL
NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY
OF SUCH DAMAGES.
Table of Contents
Specifications
Operating Information
Theory of Operation
General Safety Summaryix...................................
Service Safety Summaryxi....................................
Table 6 --4: Summary of procedures6--9..........................
Table 6--5: Tools required for module removal6--10.................
Table 6 --6: Normal supply voltages6--81...........................
Table 6--7: Test p oint voltages on A706--82.........................
Table 6--8: Symptoms and faulty modules6--83.....................
RSA3303A & RSA3308A Service Manual
vii
Table of Contents
viii
RSA3303A & RSA3308A Service Manual
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it. To avoid potential hazards, use this
product only as specified.
Only qualified personnel should perform service procedures.
To Avoid Fire or
Personal Injury
Use Proper Power Cord. Use only the power cord specified for this product and
certified for the country of use.
Ground the Product. This product is grounded through the grounding conductor
of the power cord. To avoid electric shock, the grounding conductor must be
connected to earth ground. Before making connections to the input or output
terminals of the product, ensure that the product is properly grounded.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings
and markings on the product. Consult the product manual for further ratings
information before making connections to the product.
Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.
Avoid Exposed Circuitry. Do not touch exposed connections and components
when power is present.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Provide Proper Ventilation. Refer to the manual’s installation instructions for
details on installing the product so it has proper ventilation.
Symbols and Terms
RSA3303A & RSA3308A Service Manual
Terms in this Manual. These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result i n
damage to this product or other property.
ix
General Safety Summary
Terms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an injury hazard not immediately accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. The following symbols may appear on the product:
WARNING
High Voltage
Protective Ground
(Earth) Terminal
CAUTION
Refer to Manual
x
RSA3303A & RSA3308A Service Manual
Service Safety Summary
Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service
procedures.
Do Not Service Alone. Do not perform internal service or adjustments of this
product unless another person capable of rendering first aid and resuscitation is
present.
Disconnect Power. To avoid electric shock, switch off the instrument power, and
then disconnect the power cord from the mains power.
Use Care When Servicing With Power On. Dangerous voltages or currents may
exist in this product. Disconnect power, remove battery (if applicable), and
disconnect test leads before removing protective panels, soldering, or replacing
components.
To avoid electric shock, do not touch exposed connections.
RSA3303A & RSA3308A Service Manual
xi
Service Safety Summary
xii
RSA3303A & RSA3308A Service Manual
Preface
Manual Structure
This is the service manual for the RSA3303A and RSA3308A Real-Time
Spectrum Analyzers. The manual contains information needed to service the
analyzer to the module level.
This manual is divided into sections, such as Specifications and Theory of
Operation. Further, some sections are divided into subsections, such as
Product Description and Removal and Installation Procedures.
Sections containing procedures also contain introductions to those procedures.
Be sure to read these introductions because they provide information needed to
do the service correctly and efficiently. The manual section name and a brief
description of each is given below.
HSpecifications contains a description of the analyzer and the applicable
characteristics.
HOperating Information contains a statement referring you to the RSA3303A
and RSA3308A User Manual.
HTheory of Operation contains circuit descriptions that support service to the
module level.
HPerformance Verification contains procedures for confirming that the
analyzer functions properly and meets warranted limits.
HAdjustment Procedures contains procedures for adjusting the analyzer to
meet warranted limits.
HMaintenance contains information and procedures for performing preventive
and corrective maintenance of the analyzer. These instructions include
cleaning, module removal and installation, and fault isolation to the module.
HOptions contains a statement referring you to the RSA3303A and RSA3308A
User Manual.
HElectrical Parts List contains a statement referring you to Mechanical Parts
List, where both electrical and mechanical modules are listed.
HDiagrams contains a block diagram and an interconnection diagram.
HMechanical Parts List includes a table of all replaceable modules, their
descriptions, and their Tektronix part numbers.
RSA3303A & RSA3308A Service Manual
xiii
Preface
Manual Conventions
This manual uses certain conventions that you should become familiar with.
Some sections of the manual contain procedures for you to perform. To keep
those instructions clear and consistent, this m anual uses the following conventions:
HNames of front panel controls and menus appear in the same case (initial
capitals, all uppercase, etc.) in the manual as is used on the analyzer front
panel and menus. Front panel names are all upper-case letters; for example,
SPAN, TRIG, and SELECT.
HInstruction steps are numbered unless there is only one step.
Modules
Safety
Throughout this manual, any replaceable component, assembly, or part of the
analyzer is referred to generically as a module. In general, a module is an
assembly (like a circuit board), rather than a component (like a resistor or an
integrated circuit). Sometimes a single component is a module; for example, the
chassis of the analyzer is a module.
Symbols and terms related to safety appear in the Safety Summary near the
beginning of this manual.
Notice for Trigger Function
The trigger functions vary according to the product serial numbers due to the
different hardware as follows (the serial number is labeled on the bottom-right
corner of the rear panel):
HS/N B020000 and above
HS/N below B020000 and J300100 and above
In this manual, trigger-related descriptions and specifications are marked with
the appropriate serial number if necessary.
xiv
RSA3303A & RSA3308A Service Manual
Finding Other Information
Other documentation for the RSA3303A and RSA3308A analyzers includes:
HThe RSA3303A and RSA3308A User Manual contains a tutorial to quickly
HThe RSA3303A and RSA3308A Programmer Manual explains how to use the
Preface
describe how to operate the analyzer. It also i ncludes an in-depth discussion
on how to more completely use the analyzer features.
GPIB interface to remotely control the analyzer.
RSA3303A & RSA3308A Service Manual
xv
Preface
xvi
RSA3303A & RSA3308A Service Manual
Introduction
This manual contains information needed to properly service the RSA3303A and
RSA3308A Real-Time Spectrum Analyzers as well as general information
critical to safe and effective servicing.
To prevent personal injury or damage to the analyzer, consider the following
before attempting service:
HThe procedures in this manual should be performed only by a qualified
service person.
HRead the General Safety Summary and the Service Safety Summary,
beginning on page ix.
HRead Preparation for Use in section 2, Operating Information.
When using this manual for servicing, be sure to follow all warnings, cautions,
and notes.
Performance Check Interval
Strategy for Servicing
Generally, the performance check described in section 4, Performance Verification, should be done every 12 months. In addition, performance check is
recommended after module replacement.
If the analyzer does not meet performance criteria, repair is necessary.
Throughout this manual, the term “module” refers to any field-replaceable
component, assembly, or part of the analyzer.
This manual contains all the information needed for periodic maintenance of the
analyzer. (Examples of such information are procedures for checking performance.)
Further, it contains all information for corrective maintenance down to the
module level. To isolate a failure to a module, use the fault isolation procedures
found in Troubleshooting, part of section 6, Maintenance. To remove and replace
any failed module, follow the instructions in Removal and Installation Proce-dures, also part of section 6. After isolating a faulty module, replace it with a
fully-tested module obtained from the factory. Section 10, Mechanical PartsList, contains part number and ordering information for all replaceable modules.
RSA3303A & RSA3308A Service Manual
xvii
Introduction
xviii
RSA3303A & RSA3308A Service Manual
Specifications
Specifications
This section contains the RSA3303A and RSA3308A Real-Time Spectrum
Analyzers specifications. All specifications are guaranteed unless labeled
Typical. Typical specifications are provided for your convenience.
NOTE. In these tables, those warranted characteristics that are checked in the
Performance Verification appear with the n symbol in the Characteristics
column.
Performance Conditions
The performance limits in this specification are valid with these conditions:
HThe analyzer must have been calibrated and adjusted at an ambient tempera-
HThe analyzer must be in an environment with temperature, altitude,
ture between +20
humidity, and vibration within the operating limits described in these
specifications.
_C and +30 _C.
HThe analyzer must have had a warm-up period of at least 20 minutes.
RSA3303A & RSA3308A Service Manual
1- 1
Specifications
Electrical Characteristics
Table 1- 1: Frequency
CharacteristicsDescription
Measurement frequency
Frequency rangeBaseband: DC to 20 MHz
RF:15 MHz to 3 GHz(RSA3303A)
RF1:15 MHz to 3.5 GHz (RSA3308A)
RF2:3.5 GHz to 6.5 GHz (RSA3308A)
RF3:5 GHz to 8 GHz(RSA3308A)